Sectional boiler.



Patented; NOV-26, 1912.

D. BOIES'& J. A. WADDELLLJL' SEGTIO NALBOILER.

APPLIGATION FILED OCT 9, 1911.

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DAVID EOIES AND JOSEPH A. WADDELL, JR., 01* SCRANTON, PENNSYLVANIA, AS-

SIGNORS TO SPENCER HEATER COMPANY, OF SCRANTON, PENNSYLVANIA, A

CORPORATION OF PENNSYLVANIA.

SEG'IIONAL BOILER.

Specification of Letters Patent.

Patented Nov. 26, 1912.

Application filed October 9, 1911. Serial No. 653,753.

To all whom it may concern:

Be it known that we, DAVID Bones and J o- SEPH A. VVADDELL, Jr., bothcitizens of the United States, residing at Scranton, in the county ofLackawanna and State of Pennsylvania, have invented certain new anduseful Improvements in Sectional Boilers, of which the following is aspecification.

The illustration is a vertical section through our boiler, parts beingin elevation.

The numerals 1 and 2 designate a pair of sections for a boiler, thenumber of these sections being dependent upon the intended capacity ofthe boiler. Each section is provided with flue ways 3, ft and 5, andwith depending water legs 6 and 7. It will be seen from the drawing thatthe legs 6 and 7 converge gradually from the point 8 thus forming arestricted throat 9 for the fuel magazine 10.

The magazine and the restricted throat are formed by bringing thesections 1 and 2 together, as shown in the drawing, the inner wall ofone section constituting one wall of the magazine and throat, while theinner wall of the other section constitutes the other wall of themagazine and restricted throat. Thus there is a water jacketsurroundingthe magazine and a water jacket for the restricted throat.

11 is a grate ridge bar, from each side of which grates 12 and 13 areextended in an inclined plane, said grates with the ridge barconstituting a raised grate with its apex centrally positioned withreference to the I restricted throat 9 of the magazine 10.

The sections 1 and 2 are provided with depending portions 14 and 15which constitute the side walls of the fire pot, into which thedepending legs 6 and 7 of the re stricted throat project, as clearlyseen from the drawing.

Fuel deposited in magazine 10 will feed gradually through the restrictedthroat 9 on to the raised grate, and said grate being inclineddownwardly from its ridge bar distributes the fuel evenly, thuspromoting combustion and at the same time saving fuel and preventingdead spaces in the fire bed. The combined action of the restrictedthroat of the magazine and the raised grate results in the fuel beingmore evenly distributed throughout the surfaces of the grate, whereby amore uniform and perfect heating of the boiler surface is effected.Another ob ject of the raised grate is to avoid shaking fine coalthrough at the apex or point of feeding of the grate while agitating itsufficiently to cause the coal to feed from the hopper or magazine 10.Of course, the agitation to the grate is suflicient to insure fulldischarge of the ash or spent fuel. Of course, it is understood thateach section is provided with water spaces.

We claim 1. A unit for a sectional boiler comprising two sections, theinner wall of each having a recessand a depending water leg, said legand a part of said recess being disposed at an angle to the vertical,whereby when the sections are brought together in a unit, the recessesand water legs form a fuel magazine with a restricted opening.

2. A boiler furnace comprising an inclined grate, a fuel magazine abovethe high portion of the grate and a combustion chamber over the mainbody of the grate; said magazine and combustion chamber beingconstructed of hollow boiler sections, each comprising an inner wallformed with a recess providing one side of the magazine, and an inwardlyinclined water leg depending therefrom there being a suitably relatedopposite magazine wall; and said water legs being disposed at an angleto form a constricted fuel outlet from the magazine pre sented towardthe high point of the grate; said boiler section also having an outerwall presented downwardly and inwardly to provide the outer wall of thecombustion chamber, and located to leave between it and the inwardlyinclined depending water leg,'a eombustimi chamber located over the mainbody of the grate.

The foregoing specification signed at Scranton, Pennsylvania, this 10thday of July, 1911.

DAV 1D BOIES. JOSEPH A. VVADDELL, Jn. In presence of two witnesses:

JAIJES GEAIlI-IART, W. H. Gnanin'in'r.

